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GA Corner

Selecting GA-600 Assemblies: A Practical Guide to STC Targets and Sound Control Tradeoffs

A field-focused overview of how STC ratings are organized in GA-600 and how contractors can filter assemblies by fire rating, acoustic target and constructability to reduce risk and meet performance expectations.
Brooke Fishel is director of Stewardship and External Affairs at the Gypsum Association
Brooke Fishel
March 1, 2026
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A field-focused overview of how STC ratings are organized in GA-600 and how contractors can filter assemblies by fire rating, acoustic target and constructability to reduce risk and meet performance expectations.


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All Things Gypsum

Gypsum Recycling: Opportunities and Challenges in a Circular Economy

Practical barriers make large-scale circular gypsum recycling complex, requiring coordinated efforts across manufacturers, contractors, recyclers, and policymakers to develop sustainable, localized solutions.
Brooke Fishel is director of Stewardship and External Affairs at the Gypsum Association
Brooke Fishel
December 19, 2025
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While recycling gypsum drywall can significantly reduce landfill waste practical barriers make large-scale circular recycling complex, requiring coordinated efforts across manufacturers, contractors, recyclers, and policymakers to develop sustainable, localized solutions.
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Gypsum Association Corner with Brooke Fishel
GA Corner

Adapting GA-600 Wall Systems for Larger Stud Sizes

The GA-600-2024 manual confirms that substituting larger studs—such as 2x6 in place of 2x4—does not affect a wall system’s fire rating, provided all other system details remain consistent, though designers should review potential acoustic impacts.
Brooke Fishel is director of Stewardship and External Affairs at the Gypsum Association
Brooke Fishel
October 31, 2025
No Comments

The GA-600-2024 manual confirms that substituting larger studs—such as 2x6 in place of 2x4—does not affect a wall system’s fire rating, provided all other system details remain consistent, though designers should review potential acoustic impacts.


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Gypsum Association Corner with Brooke Fishel

Fasteners That Fire-Tested Systems Rely On: Getting It Right with GA-600 and GA-216

Choosing and installing the correct fastener is critical to maintaining a gypsum system’s tested fire resistance. Here’s how to ensure compliance—and protect life safety.
Brooke Fishel is director of Stewardship and External Affairs at the Gypsum Association
Brooke Fishel
August 4, 2025
No Comments
In a fire-resistive gypsum panel assembly, the fasteners you use matter just as much as the panels and framing. A single misstep—selecting the wrong type, size, or spacing—can jeopardize fire ratings and code compliance. This article walks you through how to use GA-600 to identify the correct fastener and GA-216 to confirm its proper application, ensuring every screw, nail, or staple upholds the integrity and safety of your tested system.
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